Heavy hybrids and tetraquarks in effective field theory
نویسندگان
چکیده
منابع مشابه
Effective Field Theory of Heavy Mesons
In this paper we present a detailed formulation for a recently proposed effective field theory to describe the nonperturbative QCD dynamics of heavy mesons. This effective theory incorporates with heavy quark symmetry (HQS) and the heavy quark effective theory (HQET). Heavy mesons in this theory are constructed as composite particles of a heavy quark bounded with the light degrees of freedom. T...
متن کاملSemileptonic decays of heavy tetraquarks.
There exist heavy tetraquark states QQq̄q̄ in the heavy quark limit. These states are stable with respect to strong interactions and hence must decay weakly. It is shown that the semileptonic decay depends on a single Isgur– Wise form factor, which can be expressed in term of the Isgur–Wise form factors which govern the semileptonic decays of the Qqq and QQq baryons. Typeset using REVTEX 1 The po...
متن کاملEffective Field Theory and Heavy Quark Physics ( 2004
These notes are based on five lectures presented at the 2004 Theoretical Advanced Study Institute (TASI) on “Physics in D ≥ 4”. After a brief motivation of flavor physics, they provide a pedagogical introduction to effective field theory, the effective weak Lagrangian, and the technology of renormalization-group improved perturbation theory. These general methods are then applied in the context...
متن کاملNew Formulation of Heavy Quark Effective Field Theory
The heavy quark effective field theory (HQEFT) containing both effective 'quark fields' and 'antiquark fields' is investigated in detail. By integrating out the effective antiquark fields, we obtain an effective Lagrangian in terms of only the effective quark fields. Such an effective Lagrangian differs from the one in the usual heavy quark effective theory (HQET) because of the inclusion of th...
متن کاملOn the Renormalization of Heavy Quark Effective Field Theory
The construction of heavy quark effective field theory (HqEFT) is extended to arbitrary order in both expansion parameters αs and 1/mq. Matching conditions are discussed for the general case, and it is verified that this approach correctly reproduces the infrared behaviour of full QCD. Choosing a renormalization scheme in the full theory fixes the renormalization scheme in the effective theory ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2019
ISSN: 2100-014X
DOI: 10.1051/epjconf/201920201005